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Finding the Fourth Proportional to 315,896.64, 473,362.79 and 187,560.21

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Solution

The fourth proportional to 315,896.64, 473,362.79 and 187,560.21 is: 281,054.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,896.64 : 473,362.79 = 187,560.21 : x
  2. Step 2: Convert to fraction form
    315,896.64/473,362.79 = 187,560.21/x
  3. Step 3: Cross multiply
    315,896.64x = 473,362.79 × 187,560.21
  4. Step 4: Simplify right side
    315,896.64x = 88,784,024,298.59
  5. Step 5: Solve for x
    x = 88,784,024,298.59/315,896.64
  6. Step 6: Final answer
    x = 281,054.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.